Science & Mathematics - 4 December 2006

2006-12-04 05:05:49 · 4 answers · asked by akash_shah_13 1 in Mathematics

A gas company needs to mix 2 different octane levels of gasoline to achieve the ideal mixture required by the customer. 500 gallons of 89% octane gasoline is obtained by mixing 87% octane gasoline and 90% octane gasoline. How much of each must be used?

Can anyone please help? Anything in the right direction would be much appreciated. Thanks

2006-12-04 05:04:57 · 10 answers · asked by MysteryMan 1 in Mathematics

Always peanut butter&jelly side down for me! You too, I bet! Two insistent theories I've heard: (1) gravity favors the peanut butter&jelly side, makes it tend toward the floor [makes sense] or...(2) bread starts spinning; number of spins leaves peanut butter&jelly side down depending on height of drop [no matter whether peanut-buttered and jellied or not...]

One place you'll find (2) in print is page 91 of "mental_floss presents: ...Condensed Knowledge"

What think?

2006-12-04 05:01:36 · 2 answers · asked by fjpoblam 7 in Physics

if something stops instantly upon contact with another object, will the speed at which its travelling affect its stopping time?

2006-12-04 04:58:24 · 10 answers · asked by mezigi 2 in Physics

Okay, so I'm doing this maths homework. It's angles -

There's a triangle with TWO lines coming off it. On one of the lines there is a J. On the other side it says 84 degrees.

Inside the triangle it has K, M and 47. I have to work out what the letters are. Can anyone help me figure out how, please???

2006-12-04 04:55:15 · 4 answers · asked by BassGirl 1 in Mathematics

This particular photo was e-mailed to me a while ago and I know it is on-line some where. It's on a Reticulated Python that tryed to bite a electric fence and it's hanging from the wire by it's teeth. I thought it was a fake till I saw it last night on the National Geographic Channel.

2006-12-04 04:55:05 · 5 answers · asked by DolfinSong 2 in Zoology

2006-12-04 04:52:05 · 1 answers · asked by Anonymous in Engineering

2006-12-04 04:50:53 · 6 answers · asked by Leticia H 1 in Mathematics

2006-12-04 04:50:46 · 5 answers · asked by Anonymous in Mathematics

2006-12-04 04:49:44 · 2 answers · asked by Lisa 1 in Earth Sciences & Geology

2006-12-04 04:48:50 · 3 answers · asked by Miss LaStrange 5 in Physics

2006-12-04 04:46:53 · 13 answers · asked by t.j.barrie.t21@btinternet.com 1 in Botany

2006-12-04 04:45:52 · 6 answers · asked by Samuel 1 in Geography

how many electrons are present? is this an excited state for oxygen? in going from this state to the ground state, would energy be released or absorbed?

2006-12-04 04:44:27 · 2 answers · asked by pixela007 2 in Chemistry

2006-12-04 04:41:20 · 2 answers · asked by violently_happy85 2 in Engineering

1- An individual whose genotype is unknown, phenotypically expresses a dominant trait. To determine the genotype of the individual with the unknown genotype, you perform a test cross. The results of the offspring produced show 50% with the dominant and 50% with the recessive trait. What is the genotype of the unknown individual.

2-Two sisters both have blood type O and neither of the parents have type O. List all the possible blood types of the parents and all of their potential genotypes.(write in the correct format ( I^A/I^A, ii/I^B etc)
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1- I don't even know how to start this, is it trial and error is there a real way to approach this problem?

2- I don't understand how to set up these punnett squares, I know that Type O = ii, but I can't set up ii with any other blood type b/c that would result in some being type O which the parents aren't.

Can someone please explain how to set these up, I'm trying, but they aren't making sense. I'd really appreciate it.Thanks! = )

2006-12-04 04:39:56 · 2 answers · asked by Miss*Curious 5 in Biology

Mue sub x = n p

2006-12-04 04:39:19 · 3 answers · asked by srt927 1 in Mathematics

2006-12-04 04:38:45 · 2 answers · asked by Anonymous in Chemistry

2006-12-04 04:34:59 · 17 answers · asked by Anonymous in Biology

If the ages of Earth and Moon are nearly identical why are most rocks found on the Moon so much older than Earths Rocks?

2006-12-04 04:33:23 · 8 answers · asked by Lisa 1 in Earth Sciences & Geology

Thanks!

2006-12-04 04:30:00 · 5 answers · asked by Anonymous in Chemistry

Calculus integrals

2006-12-04 04:29:59 · 7 answers · asked by meg 1 in Mathematics

Off the top of me 'ead, I'd say dog, monkey or dolphin. Maybe an ant too. But has this ever been proven?

2006-12-04 04:28:56 · 14 answers · asked by Anonymous in Zoology

2006-12-04 04:28:47 · 6 answers · asked by Bacon 3 in Zoology

and saying "snail" over and over sounds kind of repetitive. Is there a synonym I can use?

2006-12-04 04:26:56 · 9 answers · asked by Anonymous in Zoology

2006-12-04 04:26:21 · 11 answers · asked by Leticia H 1 in Mathematics

If a, b, c are 3 positive real numbers, prove

(a^2 + 1)/(b + c) + (b^2 + 1)/(c + a) + (c ^2 + 1)/(a + b) >or = 3

And please answer my other questions.

2006-12-04 04:26:01 · 3 answers · asked by Naval Architect 5 in Mathematics

Are they pretty much the same as Earth's field?

2006-12-04 04:25:37 · 5 answers · asked by wdmc 4 in Astronomy & Space

A meeting for 60 to 100 person

2006-12-04 04:24:54 · 2 answers · asked by kimo 1 in Engineering

2006-12-04 04:24:05 · 4 answers · asked by mz.liltweet 1 in Botany